If Frank means the small fish in the picture labeled fathead minnow, that fish is NOT a fathead minnow. I am 100% sure of this. Whatever it is, it is stunted bacause the eye is too big in relation to the body. This fish was grown in too crowded of conditions. This fish is not a minnow or shiner. It does not a look like a normal bass (LMB, SMB), HSB, crappie, rock bass, bluegill, green sunfish. It is a panfish of some sort and very likely a sunfish. I don't think it is a bybrid bgill or a talapia due to the dorsal fin shape. I am not real familiar with what young warmouth look like.
The fish does have a relatively large mouth. I could be a starved bass? I would first check what fish are raised at the hatchery where it came from and then start eliminating possibilies.
